how to pass optional parameter in swagger php api annotation?

Question

I am using swagger ui and i have a Get api which take take optional parameter but i am unable to give annotation for that api below is make code which i have tried:

/**
 * @SWG\Get(
 *     path="/basics/checkDataNameAvailability/{type}/{name}{/id}",
 *     tags={"Emergency"},
 *     description="Return data useful for userGroup, deviceGroups and deviceTags",
 *     produces={"application/json", "application/xml", "text/xml", "text/html"},
 *     @SWG\Parameter(name="type",in="path",description="return useful data by type",required=true,type="integer", @SWG\Items(type="integer"),collectionFormat="csv",format="int32"),
 *     @SWG\Parameter(name="name",in="path",description="return useful data by name",required=true,type="integer", @SWG\Items(type="integer"),collectionFormat="csv",format="int32"),
 *     @SWG\Parameter(name="id",in="path",description="optional, useful data by id",required=true,type="integer", @SWG\Items(type="integer"),collectionFormat="csv",format="int32"),
 *     @SWG\Response(response=200,description="Dashboard Response",
 *          @SWG\Schema(type="array",@SWG\Items(ref="#/definitions/Pet"))
 *     ),
 *     @SWG\Response(response="default",description="unexpected error",
 *          @SWG\Schema(ref="#/definitions/ErrorModel")
 *     ),
 *     @SWG\ExternalDocumentation(description="find more info here", url="https://swagger.io/about")
 * )
 */ 

and my Get api structure is like:

$app->get('/checkDataNameAvailability/:type/:name(/:id)', function($type, $name, $id = '') use($app){
//here is my api code
});

But when i am trying this so swagger ui does not take id optional parameter, it take required parameter, help me..

Answer 1

To define an optional parameter, you just need to not define it as NOT required .

The id parameter has required=true :

@SWG\Parameter(name="id",in="path",description="optional, useful data by id",required=true,type="integer", @SWG\Items(type="integer"),collectionFormat="csv",format="int32")

You just need to set it to false:

@SWG\Parameter(name="id",in="path",description="optional, useful data by id",required=false,type="integer", @SWG\Items(type="integer"),collectionFormat="csv",format="int32")

Removing required=true also make this parameter optional

@SWG\Parameter(name="id",in="path",description="optional, useful data by id",type="integer", @SWG\Items(type="integer"),collectionFormat="csv",format="int32")